Examlex
Each modulated signal requires a certain bandwidth centered on its carrier frequency and referred to as a ________.
Archaean Eon
The period of Earth’s history from the formation of the crust approximately 4 billion years ago, until 2.5 billion years ago; life originated during the Archaean.
Oceanic Trenches
Deep, narrow depressions in the ocean floor, formed by the subduction of one tectonic plate under another.
Polar Regions
Areas surrounding the Earth's geographical poles, characterized by extreme cold and seasonal variations in daylight.
Age of Mammals
A term often used to refer to the Cenozoic Era, characterized by the rise and dominance of mammals after the extinction of dinosaurs.
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